entc/gen: move column default quoting to template (ent#2406)

entc/gen/func.go

@@ -41,7 +41,7 @@ var (
 		"aggregate":     aggregate,
 		"primitives":    primitives,
 		"singular":      rules.Singularize,
-		"quote":         strconv.Quote,
+		"quote":         quote,
 		"base":          filepath.Base,
 		"keys":          keys,
 		"join":          join,
@@ -73,6 +73,14 @@ var (
 	acronyms = make(map[string]struct{})
 )
 
+// quote only strings.
+func quote(v interface{}) interface{} {
+	if s, ok := v.(string); ok {
+		return strconv.Quote(s)
+	}
+	return v
+}
+
 // fieldOps returns all predicate operations for a given field.
 func fieldOps(f *Field) (ops []Op) {
 	switch t := f.Type.Type; {

entc/gen/template/migrate/schema.tmpl

@@ -38,8 +38,8 @@ var (
 				{{- with $c.Size }} Size: {{ . }},{{ end }}
 				{{- with $c.Attr }} Attr: "{{ . }}",{{ end }}
 				{{- with $c.Enums }} Enums: []string{ {{ range $e := . }}"{{ $e }}",{{ end }} },{{ end }}
-				{{- if not (isNil $c.Default) }} Default: {{ $c.Default }},{{ end }}
-				{{- if ne (len $c.Collation) 0 }} Collation: {{ $c.Collation }},{{ end }}
+				{{- if not (isNil $c.Default) }} Default: {{ quote $c.Default }},{{ end }}
+				{{- if $c.Collation }} Collation: "{{ $c.Collation }}",{{ end }}
 				{{- with $c.SchemaType }} SchemaType: map[string]string{ {{ range $k, $v := . }}"{{ $k }}": "{{ $v }}",{{ end }}}{{ end }}},
 			{{- end }}
 		}

entc/gen/type.go

@@ -13,7 +13,6 @@ import (
 	"path"
 	"reflect"
 	"sort"
-	"strconv"
 	"strings"
 	"unicode"
 
@@ -1219,18 +1218,18 @@ func (f Field) Column() *schema.Column {
 		c.Default = f.DefaultValue()
 	case f.Default && (f.IsString() || f.IsEnum()):
 		if s, ok := f.DefaultValue().(string); ok {
-			c.Default = strconv.Quote(s)
+			c.Default = s
 		}
 	}
 	// Override the default-value defined in the
 	// schema if it was provided by an annotation.
 	if ant := f.EntSQL(); ant != nil && ant.Default != "" {
-		c.Default = strconv.Quote(ant.Default)
+		c.Default = ant.Default
 	}
 	// Override the collation defined in the
 	// schema if it was provided by an annotation.
 	if ant := f.EntSQL(); ant != nil && ant.Collation != "" {
-		c.Collation = strconv.Quote(ant.Collation)
+		c.Collation = ant.Collation
 	}
 	if f.def != nil {
 		c.SchemaType = f.def.SchemaType
@@ -1278,7 +1277,7 @@ func (f Field) PK() *schema.Column {
 	// Override the default-value defined in the
 	// schema if it was provided by an annotation.
 	if ant := f.EntSQL(); ant != nil && ant.Default != "" {
-		c.Default = strconv.Quote(ant.Default)
+		c.Default = ant.Default
 	}
 	if f.def != nil {
 		c.SchemaType = f.def.SchemaType